Consider an airplane flying at a pressure altitude of 33,500 ft and a density altitude of 32,000 ft. Calculate the outside air temperature.

A cylinder has 40 holes evenly spaced around its surface. Each hole has a diameter of 5mm. One end of the cylinder is sealed with an end cap and the other end is connected to a vacuum air pump. 40 spheres, each with a weight of 0.1 grams, have a diameter of 8mm will be placed over each hole in the cylinder. Calculate the minimum suction power (in Pascals) required to produce the pressure in order to hold the spheres to the cylinder.

The manometer pressure at pipe A is about 30mmHg and the initial differential reading of Mercury is 0.30 m as shown.Calculate the absolute pressure at pipe B.

A pilot flies at 850 mb level over a region with reported sea-level pressure of 1000 mb and temperature of 0 degrees celcius, and temperature decreases with height at 6.5 degrees celcius/km over the region, calculate the altitude of the airplane. Show the derivation of the altitude formular starting from hydrostatic balance.